Getting started

Hi everybody,
I am new to this forum and site. It’s really cool place! I read this tutorial and it is very helpful indeed. I want to make a photo gallery for my website. The one included in the tutorial is nice, but it is too small. I would like to make a bigger frame with different buttons, but I don’t have a clue how to start and even which program to use. Can you redirect me to a tutorial for drawing/building frames (or the way you call them) or a database with free ready frames? I would like to note that I am not very good and experienced in drawing and design. I have some skills in HTML and C++ and almost anything else.

Thanks in advance!